MAX5014ESA-T Application Field and Working Principle

The MAX5014ESA-T is a low-cost, high-performance DC-DC switching controller with a wide variety of features and versatile configuration options. The device is designed for applications ranging from 12- to 24-V input voltage sources, allowing operation up to 28V with an optional output feedback clamping level selection. Its integrated driver and very low shutdown current enable low-power and low-noise solutions. Additionally, the MAX5014ESA-T operating frequency is programmable from 0 MHz to 1.2 MHz.

Features

• Low-cost and high-performance DC-DC switching controller
• Integrated driver and very low shutdown current enable low-power and low-noise solutions
• Operating frequency is programmable from 0 MHz to 1.2 MHz

Application

The MAX5014ESA-T is suitable for applications from 12V to 28V input voltage sources, step-up/step-down switching converters, energy harvesting applications, automotive/industrial applications, and portable device, such as cellular phones.

Input, Output and Programming

The MAX5014ESA-T has an integrated driver for an N-channel MOSFET. It offers a wide range of selectable output feedback levels with the OPUP voltage or integrated totem-pole PWM output to drive other external circuitry. The device also provides an internal start-up regulator, auxiliary supply regulator, programmable soft-start, fast-transient response, and cycle-by-cycle current limit.

Working Principle

The MAX5014ESA-T implements a linear regulator to generate the desired output voltage. A precision voltage reference is used to provide an external voltage feedback control loop. This feedback loop is used to maintain a constant output voltage by adjusting the switching frequency and duty cycle of the MOSFET as the load or line voltage changes. The device also provides an adjustable soft-start, to reduce the inrush current during start-up and prevent output overload.

Advantages of MAX5014ESA-T

The MAX5014ESA-T has several advantages compared to other switching controller solutions. It offers low-cost, high-performance, and low noise operation. Its wide operating frequency range from 0 MHz to 1.2 MHz can meet various switching applications. Its integrated driver provides low-power and low-noise operation. Moreover, it provides an adjustable soft-start and fast-transient response feature which reduces the inrush current during start-up and prevents output overloads.